Permanent docs definitely belong in git. This is just the desk scratchpad for messy session context so you can /clear freely without cluttering commit history or burning tool calls on grep. Anti Gravity has a large enough context window that seems to be less needed than Claude Code but the real value now with engrim is if you are using multiple services, your project is relevant when switching services. This was born from my long haul Claude Code development sessions and morphed into its current state from swapping around CLI services on the same projects.